CN106865935A - Using anthraquinone 2,6 disulfonic acid salt（AQDS）The method for promoting excess sludge methane phase - Google Patents
Using anthraquinone 2,6 disulfonic acid salt（AQDS）The method for promoting excess sludge methane phase Download PDFInfo
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- CN106865935A CN106865935A CN201710027743.1A CN201710027743A CN106865935A CN 106865935 A CN106865935 A CN 106865935A CN 201710027743 A CN201710027743 A CN 201710027743A CN 106865935 A CN106865935 A CN 106865935A
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- sludge
- aqds
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- methane
- fermentation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F7/00—Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
- C05F7/005—Waste water from industrial processing material neither of agricultural nor of animal origin
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Hydrology & Water Resources (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Supply & Treatment (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention provides a kind of main using anthraquinone 2,6 disulfonates (AQDS) strengthen syntrophism metabolism between microorganism in excess sludge anaerobic digestion as the function of electron shuttle and electron acceptor, accelerate Hydrolysis Acidification, improve the yield of methane through following steps using the cheap device of simple structure：Excess sludge by solid content less than 10% is well mixed with seed sludge and AQDS, and is fermented 20 to 25 days, most preferably 22 days in anaerobic fermentation tank, in fermentation process, periodically with nitrogen to the sludge aeration in fermentation tank, stirring and removal oxygen, and collect the methane gas of generation.Methane cumulative production increased 24.05% than blank (being not added with AQDS) when experiment shows that AQDS concentration is 0.2mmoL/L.After fermentation ends, sludge stands and carries out mud-water separation, and supernatant is back to regulating reservoir, and the body refuse rich in a large amount of nitrogen P elements can be used for agricultural production.The present invention promote excess sludge methane phase method and technology it is simple, easy to operate, for newly-built and existing sludge treatment technique in, can effectively increase the yield of methane.
Description
Technical field
The invention belongs to excess sludge process field.
Technical background
Because yield is big, processing cost is high and potential environmental hazard, the residual active sludge from sewage treatment plant
Increasingly it is valued by people.The anaerobic bio-treated of sludge can utilize microbiological treatment sludge, organic in reduction sludge
Thing content, reduces harm of the Sludge landfill to underground water, at the same time, anaerobic digestion advantage of lower cost, and and produce methane
Deng fuel gas, so anaerobic digestion is considered as one of current most energy-conservation, most potential residual active sludge processing mode.
However, the key factor of a limitation anaerobic sludge digestion efficiency is its relatively slow Hydrolysis Acidification.
Containing the material (e.g., polysaccharide, albumen) that comparison of ingredients is complicated in sludge, they must be decomposed into small-molecule substance and can just carry out
Hydrogenesis and acetogenesis and then methane phase, but the decomposition rate of these complicated macromolecular substances is relatively slow, and then after influenceing
Continuous methane phase.The preprocessing means such as main application acid treatment, alkali process, mechanical treatment and heat treatment improve hydrolysis acidification at present
Speed, but these technical costs are high, and complex operation, it is difficult to using in practice.
Humus and its pattern thing, can be as ends due to having the characteristics of connecing nucleophobic quinones group in its structure
Electron acceptor, supports the anaerobic biological oxidation of the organic compounds such as acylate, chlorinated compound, aromatic compound.But
Due to humus complex structure, its allied substances anthraquinone -2,6- disulfonates (AQDS), as AQDS can be straight are commonly used in laboratory
The electron acceptor as acetic acid and butyric acid is connect,
Acetate-+4H2O+4AQDS→4AH2QDS+2HCO3 -+H+
Lactate-+2H20+2AQDS→2AH2QDS+aeetate-+HCO3 -+H+
Also, this design feature, makes it be also used as electron shuttle, in the biological or organic dirt of non-biodegradation
Dye thing such as azo dyes, many halogen substituted compounds, nitro substituted aromatic compound etc. and reduction inorganic compound such as Fe
(III) extremely important transmission electronics, is played a part of during Cr (VI), U (VI) etc..During this, humus material
The oxidation states of the quinones group in (e.g., AQDS) structure can be converted into reduction-state with reference to the electronics from electron donor
Hydroxyl quinone, electro transfer again can be allowed to reduce to electrophilic material, and the humus of reduction-state is to be re-converted into oxidation state, its
The circulation of oxidation state/reduction-state is formed realizes the reduction conversion lasting to polluter.Therefore made with humus and its pattern thing
It is electron acceptor or electron shuttle, is existed using liquid humid acid fertilizer microbiological anaerobic degradable organic pollutant technology and its principle
Environmental organism repairs field has huge application prospect.The present invention is exactly to be worn as electron acceptor and electronics with above-mentioned AQDS
The function of shuttle body, in the anaerobic digestion of sludge, using some of liquid humid acid fertilizer microbiological oxidation sludge organic matter, especially
It is hard-degraded substance, accelerates the Hydrolysis Acidification of sludge, and then strengthen methane phase process.
The content of the invention
To overcome defect of the prior art, the present invention to propose following technical scheme：One kind utilizes anthraquinone 2,6 disulfonic acid
Salt (AQDS) promotes the device of excess sludge methane phase, it is characterised in that：Charging aperture is provided with including side wall top and lower section is provided with
The fermentation tank of mud discharging mouth.Escaping pipe is covered with fermentation tank and tank bottom is provided with aerator.It is provided with the regulating reservoir of agitator
Downside is connected through the mud discharging mouth that peristaltic pump is provided with fermentation pot sidewall lower section.
A kind of method that use said apparatus promote excess sludge methane phase, it is characterised in that：Comprise the following steps：
1) will take from the residual active sludge pending high solid of sewage treatment plant, AQDS use liquid (0.1mmoL/L), water with
And seed sludge is sufficiently mixed in regulating reservoir 1.Wherein：It is 8 that sludge is introduced a fine variety with pending mud volume ratio:1.It is dirty after mixing
Mud solid content is less than 10%；Between 0.1-0.3mmoL/L, optium concentration is 0.2mmoL/L to the concentration of AQDS.Turn on agitator
2 are stirred, and are sufficiently mixed pending activated sludge, microorganism and AQDS.
2) sludge in regulating reservoir 1 is entered and anaerobic fermentation is carried out in anaerobic fermentation tank 5 by startup peristaltic pump 3 through injection port 4,
8-12 days used time, reach effect as scheduled within the 10th day.After sludge methane phase stabilization in fermentation tank, need not be reapplied in regulating reservoir 1
Introduce a fine variety sludge.Hydraulic detention time of the sludge in fermentation tank 5 is 22 days.Fermenter base sets the equally distributed nitrogen of solarization air cap
Gas aerator 6, wherein, N2 flows are 5L/min, are started once per 4h, and 30min is aerated every time.The gas outlet on fermentation tank top
7 fermentation gas are collected.
3) through the sludge after the treatment that discharge pipeline 8 is discharged, carry out muddy water and be sufficiently separated, liquid is back to regulating reservoir 1.
It is as electron shuttle and the major function of electron acceptor using AODS using above-mentioned technical proposal of the present invention
Promote the minimizing after excess sludge anaerobic fermentation, and improve methane production, the body refuse after fermentation contains substantial amounts of nitrogen phosphorus
Element, can be used for agricultural production.The method is convenient, easy to operate.
Brief description of the drawings
Fig. 1 is the schematic device of invention.Wherein：1- regulating reservoirs, 2- agitators, 3- peristaltic pumps, 4- injection ports, 5- fermentations
Tank, 6- aerators, 7- escaping pipes, 8- mud discharging mouths
Fig. 2 is laboratory simulation small testing device schematic diagram.Wherein：9- conical flasks, 10- sludge liquid levels, 11- exposes nitrogen to be led
Pipe, 12- gas collection conduits.
Fig. 3 be laboratory simulation lab scale in, the methane cumulative production of experimental group (plus AQDS) and blank group (being not added with AQDS)
Schematic diagram.Wherein：Abscissa is the number of days of anaerobic fermentation, and ordinate is methane cumulative volume (mL).
Specific embodiment
Principle of the invention is, by the use of AQDS as electron shuttle and the major function of electron acceptor, to promote microorganism
Between syntrophism metabolism to accelerate the anaerobic digestion of sludge, promote methane phase.
Experimental provision of the present invention including side wall top as shown in figure 1, be provided with charging aperture 4 and lower section is provided with the hair of mud discharging mouth 8
Fermentation tank 5, is covered with escaping pipe 7 on fermentation tank 5 and tank bottom is provided with aerator 6.It is provided with the downside of the regulating reservoir 1 of agitator 2
The mud discharging mouth 8 being provided with the side wall lower section of fermentation tank 5 through peristaltic pump 3 is connected.Sludge anaerobic is carried out by the way of continuous sample introduction
Fermentation, the seed sludge containing a large amount of microorganisms is used to accelerate the startup time of reactor.
Each step is further illustrated with reference to schematic diagram：
Step one：The startup of reactor.The solid residual active sludge pending high of sewage treatment plant, AQDS will be taken to use
Liquid (0.1mmoL/L), water and seed sludge are sufficiently mixed in regulating reservoir 1, wherein, introduce a fine variety sludge and pending mud volume ratio
It is 8:1.After mixing, the concentration that sludge solid content should be less than 10%, AQDS should be between 0.1-0.3mmoL/L, and optium concentration is
0.2mmoL/L.Turn on agitator 2 is stirred, and is sufficiently mixed pending activated sludge, microorganism and AQDS.
Step 2：Carry out sludge anaerobic fermentation.Start peristaltic pump 3 and the sludge in 1 is entered into anaerobic fermentation tank through injection port 4
Anaerobic fermentation is carried out in 5, is continued until the 8-12 days.Preferably the 10th day.In fermentation tank after sludge methane phase stabilization, regulation
Just do not reapplied in pond 1 and introduce a fine variety sludge, hydraulic detention time of the sludge in fermentation tank 5 is 22 days.To make the material in tank
Well mixed and holding anaerobic state, fermenter base sets the equally distributed nitrogen aerator 6 of solarization air cap, wherein, N2's
Flow is 5L/min, is started once per 4h, and 30min is aerated every time.The gas outlet 7 on fermentation tank top carries out the receipts of fermentation gas
Collection.
Step 3：Through the sludge after the treatment that discharge pipeline 8 is discharged, carry out muddy water and be sufficiently separated, liquid is back to regulating reservoir
1.Remaining solid after mud-water separation, because including substantial amounts of nitrogen, phosphorus can be used as farmland fertilizer, it is also possible to processed as building
Build material.
Effect of the invention is described further below by laboratory simulation lab scale：
Take the sludge that solid content is 7.5%, then with take from the reactor of laboratory one introduce a fine variety sludge with volume ratio be 8:1
Ratio mixing.Wherein, experimental group addition AQDS solution, blank control group adds the deionized water of same volume, after mixing
The concentration of AQDS is about 0.2mmoL/L.Above-mentioned well mixed sludge solutions 150mL is taken respectively in 250mL conical flasks 9, is led to
Crossing conduit 11 of the bottom under sludge liquid level 10 carries out N2With the oxygen in removing system, conduit 12 connects airbag to aeration within 30 minutes
Collect anaerobic digestion gas.It is 37 degrees Celsius that conical flask is placed in temperature, and vibration rate is in the shaking table of 120r/min, to ferment 22 days.
Experimental provision, as shown in Fig. 2 experiment methane cumulative production is as shown in figure 3, experimental group methane cumulative production increases than blank test
24.05%, illustrate that AQDS actually reaches the purpose for promoting activated sludge methane phase.
Claims (2)
1. a kind of to utilize anthraquinone -2,6- disulfonates (AQDS) promote the device of excess sludge methane phase, it is characterised in that：Including
Side wall top is provided with charging aperture (4) and lower section is provided with the fermentation tank (5) of mud discharging mouth (8), is covered with out on the fermentation tank (5)
Tracheae (7) and tank bottom is provided with aerator (6)；Be provided with agitator (2) regulating reservoir (1) downside through peristaltic pump (3) with it is described
The mud discharging mouth (8) that fermentation tank (5) side wall lower section is provided with is connected.
2. the method that a kind of 1 described device of usage right requirement promotes excess sludge methane phase, it is characterised in that：Including following step
Suddenly：
1) solid residual active sludge, the AQDS pending high of sewage treatment plant will be taken from using liquid (0.1mmoL/L), water and is connect
Sludge is planted to be sufficiently mixed in regulating reservoir (1)；Wherein：It is 8 that sludge is introduced a fine variety with pending mud volume ratio:After 1 mixing, sludge contains
Gu rate is less than 10%；Between 0.1-0.3mmoL/L, optium concentration is 0.2mmoL/L to the concentration of AQDS；Turn on agitator (2)
It is stirred, is sufficiently mixed pending activated sludge, microorganism and AQDS.
2) sludge in regulating reservoir (1) is entered in anaerobic fermentation tank (5) and carries out anaerobism by startup peristaltic pump (3) through injection port (4)
Fermentation；8-12 days used time, reach effect as scheduled within the 10th day；After sludge methane phase stabilization in fermentation tank, need not in regulating reservoir (1)
Reapply and introduce a fine variety sludge；Hydraulic detention time of the sludge in fermentation tank (5) is 22 days；It is uniform that fermenter base sets solarization air cap
The nitrogen aerator (6) of distribution, wherein, N2 flows are 5L/min, are started once per 4h, and 30min is aerated every time；On fermentation tank
The gas outlet (7) in portion fermentation gas are collected.
3) through the sludge after the treatment that discharge pipeline (8) is discharged, carry out muddy water and be sufficiently separated, liquid is back to regulating reservoir (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710027743.1A CN106865935A (en) | 2017-01-13 | 2017-01-13 | Using anthraquinone 2,6 disulfonic acid salt（AQDS）The method for promoting excess sludge methane phase |
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| CN201710027743.1A CN106865935A (en) | 2017-01-13 | 2017-01-13 | Using anthraquinone 2,6 disulfonic acid salt（AQDS）The method for promoting excess sludge methane phase |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107973404A (en) * | 2017-12-06 | 2018-05-01 | 杭州电子科技大学 | The method of redox mediators regulation and control debirs orientation fermentation production acetic acid coupled low temperature denitrification denitrogenation |
| CN110183029A (en) * | 2019-03-18 | 2019-08-30 | 内蒙古科技大学 | A kind of apparatus and method converting organic wastewater to acetic acid |
| CN110205238A (en) * | 2019-03-18 | 2019-09-06 | 内蒙古科技大学 | A kind of is the apparatus and method of acetic acid by hydrogen and carbon dioxide conversion |
| CN115651140A (en) * | 2022-12-29 | 2023-01-31 | 中国农业科学院农业环境与可持续发展研究所 | Three-dimensional carbon-based copolymerized composite material and preparation method and application thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107973404A (en) * | 2017-12-06 | 2018-05-01 | 杭州电子科技大学 | The method of redox mediators regulation and control debirs orientation fermentation production acetic acid coupled low temperature denitrification denitrogenation |
| CN110183029A (en) * | 2019-03-18 | 2019-08-30 | 内蒙古科技大学 | A kind of apparatus and method converting organic wastewater to acetic acid |
| CN110205238A (en) * | 2019-03-18 | 2019-09-06 | 内蒙古科技大学 | A kind of is the apparatus and method of acetic acid by hydrogen and carbon dioxide conversion |
| CN110183029B (en) * | 2019-03-18 | 2022-04-01 | 内蒙古科技大学 | Device and method for converting organic wastewater into acetic acid |
| CN110205238B (en) * | 2019-03-18 | 2022-12-06 | 内蒙古科技大学 | Device and method for converting hydrogen and carbon dioxide into acetic acid |
| CN115651140A (en) * | 2022-12-29 | 2023-01-31 | 中国农业科学院农业环境与可持续发展研究所 | Three-dimensional carbon-based copolymerized composite material and preparation method and application thereof |
| CN115651140B (en) * | 2022-12-29 | 2023-03-17 | 中国农业科学院农业环境与可持续发展研究所 | Three-dimensional carbon-based copolymerization composite material and preparation method and application thereof |
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Application publication date: 20170620 |